The issue is that it arguably violates the spirit of open source. Open source software is meant to be free and available to everyone. The spirit of Open Source

The issue is that it arguably violates the spirit of open source. Open source software is meant to be free and available to everyone. The spirit of Open Source is free like speech, not like beer. Open Source, while often given away, has always been about empowering people to be able to hack on internals, not simply avoid paying money for things. I've paid real money for a lot of open source software for the decade and a half and done so happily.